CVE-2018-4126

Un problema de corrupción de memoria se abordó con una gestión de memoria mejorada. El problema afectaba a iOS, en versiones anteriores a la 12; macOS Mojave, en versiones anteriores a la 10.14; tvOS, en versiones anteriores a la 12; watchOS, en versiones anteriores a la 5; iTunes para Windows, en versiones anteriores a la 12.9 y iCloud para Windows en versiones anteriores a la 7.7.

This vulnerability allows local attackers to disclose sensitive information on vulnerable installations of Apple macOS. An attacker must first obtain the ability to execute low-privileged code on the target system in order to exploit this vulnerability.
The specific flaw exists within the handling of cookie data. The issue results from the lack of proper validation of user-supplied data, which can result in a read past the end of an allocated buffer. An attacker can leverage this in conjunction with other vulnerabilities to execute code in the context of the current user.